Leonard David Books

Mission to Mars

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“Any time an Apollo-era astronaut steps forward with ideas for our future in space, it’s time to stop what whatever we’re doing and pay attention. Buzz Aldrin, one of the first...

Mars

By Leonard David

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The next frontier in space exploration is Mars, the red planet. National Geographic goes years fast-forward to take a peek into the gravity-defying world of outer space with stunning photography, a...

Moon Rush

By Leonard David

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Veteran space journalist digs into the science and technology--past, present, and future--central to our explorations of Earth's only satellite, the space destination most hotly pursued today.In th...

Mars

By Leonard David

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Chaos to Cosmos

By Laura Danly, Donald Goldsmith, Leonard David

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Space Careers

By Leonard David, Scott Sacknoff

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Moon Rush Lib E

By Dan Woren, Cassandra De Cuir, Leonard David

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Moon Rush

By Leonard David

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Consulting with Human Service Systems

By Leonard D. Goodstein

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.